3521404 has 12 divisors (see below), whose sum is σ = 6175624. Its totient is φ = 1756944.

The previous prime is 3521389. The next prime is 3521417. The reversal of 3521404 is 4041253.

It is a super-2 number, since 2×3521404² = 24800572262432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3034 + ... + 4030.

Almost surely, 2^3521404 is an apocalyptic number.

It is an amenable number.

3521404 is a deficient number, since it is larger than the sum of its proper divisors (2654220).

3521404 is a wasteful number, since it uses less digits than its factorization.

3521404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 3521404 is about 1876.5404338836. The cubic root of 3521404 is about 152.1383205347.

Adding to 3521404 its reverse (4041253), we get a palindrome (7562657).

The spelling of 3521404 in words is "three million, five hundred twenty-one thousand, four hundred four".